Self-filling fountain-pen



H. LEWINSON.

SELF FILLING FOUNTAIN PEN.

APPLICATION FILED FEB-21.1921.

Patented Oct. 4, 1921.

In vaniai? V W $4 A ffarnay.

its r HYMAN LEWINSON, 0F ERIE, PENNSYLVANIA.

SELF-FILLING FOUNTAIN-PEN.

Application filed February 21, 1921.

T 0 all whom it may concern: I

Be it known that I, HYMAN LEwrNsoN, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in Self-Filling Fountain- Pens, or which the following is a specification.

The pen forming the subject of this invention has means by which it may be readily filled without the inconvenience of filling devices, or of taking any of the parts of the pen apart, the filling being accomplished through the feed channel of the pen.

The invention is illustrated in the accompanying drawings as follows Figure 1 shows a central section of the pen in closed position.

Fig. 2 a similar section with the plunger in position to fillthe pen.

Fig. 3 a section on the line 33 in Fig. 1.

Fig. 4: an enlarged section on the line -'l4l in Fig. 1. I

The pen has an outer barrel 1 into which a lower pen carrying plug 2 is screwed. An inner barrel 3 is mounted in the plug 2 and a pen a is mounted in the plug 2 with a teeding channel 5 extending from the inner barrel in position to feed the ink to the pen.

An annular plunger 6 is slidingly mounted in the chamber between the inner and outer barrels. The plunger has the stems 7, one from each side of the plunger, which extend through the upper end of the outer barrel and has a handle or cap 8 at its upper end. A minute opening 9 affords a com munication between the inner barrel and the chamber between the barrels.

When it is desired to fill the pen the plunger is drawn to the position shown in Fig. 2, the pen inserted in a supply of ink and the Specification of Letters Patent.

Patented Oct. at, 1921.

Serial No. 446,755.

plunger moved down to the position shown in Fig. l. The partial vacuum formed in the chamber between the barrels is communicated through the opening 9 to the inner barrel and this draws in the ink. The inner and outer barrels should be of approximately the same capacity so that with the inner barrel, filled, or approximately filled the vacuum in the chamber between the barrels will be satisfied.

The plunger is formed by a body portion 10 of yielding material which is arranged between a plate 11 resting against a shoulder 12 on the stems 7 and a metal plate 13 which is compressed against the body 10 as the end of the stem is headed over at l l.

In order to conveniently pack the stems passing through the barrel I form the upper end of the outer barrel with a screw thread 15 and screw into this screw thread the plates 16 and 17. These plates have the openings 18 through which the stems 7 extend. A packing 19 is arranged bet-ween the plates, this packing being compressed as the outer plate 17 is entered in the thread. The usual cap 20 is provided which extends over the lower end of the outer barrel.

What I claim as new is In a self-filling pen, the combination of an outer barrel; an inner barrel surrounded by the outer barrel and communicating at its upper end with the outer barrel and having a feeding passage at its lowerend, the inner barrel and the chamber between the barrels being of equal capacity; a plunger between the barrels; and a plunger stem extending out of the top of the outer barrel.

In testimony whereof I have hereunto set my hand.

HY'MAN LElVINSON. 

